Could you possibly be a little more descriptive with your problem? I usually only get 404 errors when my ISP is having problems, as the staff here bends over backwards to make sure the site runs as smoothly as possible.

In light of the upgrades that just took place Friday, it is possible that there are a few glitches that have not been ironed out yet. So some examples would help the staff narrow down any problems that you may be having.

What have you done to verify that it isn't a problem on your end, because since the upgrade took place Friday, nobody else has complained of any issues?

I've been getting that too, and if you try and reload the SFDC home page when the happens you get what looks like the administration page for the site, with logins for site and user administration.
I've been attributing it to the site upgrades and just ignoring it. I'll try and grab a screen shot if it happens again. So far it seems like the site is running pretty good today

Well this has been happening since I set up my account yesterday. I'm constantly being sent to links that have a www. at the begining of the url. If I remove the www. then the link works. Even the confirmation for registration did this, emailed notices of posts to monitored strings, and links within the site. I first came here through a link from www.windowsecurity.com, and that link didn't work either. I removed the /forum from the url and found myself at an administrative logon screen; (https://www.security-forums.com:19638/webhost/rollout/site), rather than pokeing at that too much (I was tempted) I tried removing the www. and found my way to the buliten board. Maybe it has to do with my ISP's DNS, but I haven't had any problems with other sites, I could try changing my DNS server to a DNS Root Hint server to see if I get the same type of issue. Know any good root hint addresses off the top of your head?

We were originally suppposed to be completely down all weekend, but through amazing work of the Admins we never went down. We do seem to be still having a few problems that need to be worked out. The site should be totally back online and functioning by tommorrow.

so.........don't know what the deal is.......don't have problems with other websites....I take that back, I do have occasional problems with another site that is set up similiar to this one, www.isaserver.org
but most links work, it is often that article that I search for, when I try to go the link in the result, get 404.

for what its worth............looks like this would be a very good site, except I can't read anything.....

Thanks for letting us know about this. Can you please navigate to www.windowsnetworking.com for now, as that is the actual main site. I'm checking into the other dead links and I'll let you know once that is fixed.